Take screenshot of server screen and send this to request browser.

Welcome to fun programming. Here we are creating a socket to a simple http web server. This program is taking screen shot of server system to client request browser. If I wanna see my friend screen and my friend is running this program then I just type his IP:8989 on browser and can see his current screen. Improvement of this program as continuous  streaming is home assignment for you. Thanks to Vikram.

import java.io.*;
import java.net.*; 
import java.awt.Rectangle;
import java.awt.Robot;
import java.awt.Toolkit;
import java.awt.image.BufferedImage;
import javax.imageio.ImageIO;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.*;


class WebScreen {
    SimpleDateFormat formatter = new SimpleDateFormat("yyyMMddhhmmssa");
   public static void main(String argv[]) throws Exception
 { 
  new WebScreen().showImage(); 
 }

    public String robo() throws Exception
    {
        Calendar now = Calendar.getInstance();
        String name = formatter.format(now.getTime());
        
        Robot robot = new Robot();
        BufferedImage screenShot = robot.createScreenCapture(new Rectangle(Toolkit.getDefaultToolkit().getScreenSize()));
        ImageIO.write(screenShot, "JPG", new File(name +".jpg"));
        System.out.println(formatter.format(now.getTime()));
        return name+".jpg";
        
    }


    public void showImage() throws Exception
    { 
 String clientSentence;  
 String file1 = "";   
      String capitalizedSentence;     
     ServerSocket welcomeSocket = new ServerSocket(8989);
       while(true)          {     
          Socket connectionSocket = welcomeSocket.accept();  
          BufferedReader inFromClient =      new BufferedReader(new InputStreamReader(connectionSocket.getInputStream()));   
          DataOutputStream outToClient = new DataOutputStream(connectionSocket.getOutputStream());   
          clientSentence = inFromClient.readLine();    

          System.out.println("Received: " + clientSentence);   
          capitalizedSentence = clientSentence.toUpperCase() + '\n';
        
  
      file1 = this.robo();
 

       PrintStream out=new PrintStream(new BufferedOutputStream(
         connectionSocket.getOutputStream()));


        // read the data sent. We basically ignore it,
        // stop reading once a blank line is hit. This
        // blank line signals the end of the client HTTP
        // headers.

        // Send the response
        // Send the headers
     InputStream f=new FileInputStream(file1);

      out.print("HTTP/1.0 200 OK\r\nContent-type: image/jpeg\r\n\r\n");

        // Send file contents to client, then close the connection
        byte[] a=new byte[8192];
        int n;
        while ((n=f.read(a))>0)
         out.write(a, 0, n);
        out.close();

   welcomeSocket.close();

  TCPServer obj = new TCPServer();
  obj.showImage();
 

       } 
  
 
    }

 }

Compile :  Javac WebScreen.java
Run : Java WebScreen
See in browser type : http://localhost:8989


developed By : GauravDS & Vikram Biwal.